Safety razor



March 26, v1940. v G, R, B01-1' 2,195,164

' SAFETY RAZOR Filed March 6, 1937 ATTO EY.

Patented Mar. 1940 UNITED STATES PATENT ori-leg George R.'Bott,Stamford, Conn.: The Stamford Trust Company, executor of said George R 4Bott, deceased Application March s, 19er, seal No. 129,452

1 claim. (ci. ao-am This invention relates to razors, and moreparticularly to the kind as shown and described in my copendingapplication Serial Number 90,060 filed July 11, 1936, and has for itsparticular object to provide a novel method-of making the cuttingmembers in which the teeth thereof have cutting edges on one or bothsides, and in whichthe member is molded from a material such as Bakeliteor synthetic resinous material, with various paper, linen or otherinclusions or the like, and which molded portion is laminated with athin metal plate of high grade steel or the like, which metal plateserves to provide the cut.v ting edges.

By the use of this method, these cutting members may be manufactured ata very low cost, since such plastic material is inexpensive and yetdurable; the metal plate being made of high grade steel and beingrelativelysmall, essentially sufficiently large enough to provide thecutting edges, the cost of the entire cutting member is kept very low,while at the same time the molded material has rounded or broken edgesand needs no finishing or bumng operation.v The metal' plates themselvesmay be stamped and the square edges resulting therefrom may be removedby grinding to form .keen cutting edges, the ground plate being thenmolded with Bakelite. Or the stamped plate without'grinding can beapplied to a molded Bakelite member, and both the Bakelite member andthe metal plate ground to form keen cutting edges. A plurality ofsuperimposed plates such as shown in Fig. 12 may be subjected to agrinding operation at the same time to provide keen cutting edges.

rThe invention, therefore, consists of method of making these thin,laminated cutting members, and also in the novel structure-of partmolded, part metal cutter members as a new article of manufacture.

The invention herein to be described is applicable both to circularrazor' cutters such as is described in my copending application, andalso to the standard type of rectangular shaped safety razors of thevibrating type.

The invention will be more fully described hereinafter, embodimentsthereof shown in the the novel ils anchored to the Bakelite plate orlamina. Or, 50

Fig. 2 is a radial section taken on line 2-2 of Fig. 1, Fig. 3 is asection of Fig. 1 on line 3-3 thereof.

Fig. 4 is a plan' view of a part ofa botto member of another modication,5

Fig. 5 is a plan v iew of a top cutting member,

Fig. 6 is a section of Fig. 5, taken on line 6-6 thereof,

Fig. 7 isa section of Fig, 5 on line 1--1 thereof,

Fig. 8 is a plan view of another modification,y l0 of the top member, 1

Fig. 9 is a plan view'of a rectangularly shaped cutter, v Fig. 10 isaplan view of a circularly shaped cutter, Il

Fig. 11 is a section of the blank, used to form the cutting edges, and

Fig. vr12 is a section'of a plurality of metal blanks superimposed uponeach other, and. edges sharpened to form shearing teeth.

Referring to the drawing, a bottom member of my improved razor is shownin'Fig.v 1 and in Fig. 4, and a. top member is shown in Figs. 5 and -8.While these are of circular shape as shown inA Fig. 110, they may bemade inrectangular form 25 with teeth on two sides, as shown in Fig. 9.

'I'hese top and bottom members are made of Bakelite or the like,laminatedv with thin metal plates which provide the cutting edges.

The thin metal plates for this purpose may be 30 made in various ways;one way, for example, is to stamp a metal plate and then grind it toform cutting edges, as shown in Fig. 11. Or, the stamped plates can beplaced one'on'top of. the other, and the edges ground, while the plates:35 are superimposed, as shown in Fig."12. Or the', stamped plateswithout the cutting edges can be attached to the Bakelite during themolding, and then the Bakelite can be ground off Where neces sary andthe cutting edges can be ground on the, 40 plate, in-one operation.

Assuming that the plates of Fig. 11 are first cut I to lateral cuttingedges, then either such a plate or a plate such as shown in Fig. 12, istaken and placed in a position in a mold (not shown) and 45 thereupon aplastic material such as Bakelite, is putinto the mold. The metal platesare provided with sprung up portions, which mold with the material, andthereby the thin metal plate the metal plates or laminae may beconnected to the material, as shown in Fig. 4 and Fig. 8, by cement orthe like.

In Figs. 1, 3 and 6 is shown the thin metal plate 20, and the'Bakeliteportion 2l. The an- 55 'nie teeth of the Bakelite plate are indicated byIl and have converging walls V2l to .enable their release from themolds. The smooth teeth 2l act as combs for the hairs to be cut. Theyalso have an angular face 25, which is at an inclination to the bottomplane, and the tips are rounded as at 21. Embedded in a recess 2l is themetal plate 20.

"I'he thin metal plate 2l has cutting edges 30, at one side o f eachtooth of the plate when in circular form, and at both sides of eachtooth when the cuttinghead is rectangular. Even when in circular shape,each tooth can be provided with two cutting edges. 'I'hese cutting edgesare formed by the intersection of two planes at an acute angle, theplanes passing through the sides of the teeth. The plane of rotation isat right angles to the hair to be cut, and in case of a rectangularrazor cutting set, the plane of reciprocation or vibration is at rightangles tothe axis of the hair to be cut. This plane forms the side 3| ofthe metal plate 20.

The Bakelite holding member can also be molded separately to shape asshown, and the toothed metal plate 20 can be cemented thereto'bysuitable cement. y

The top cutting members 35, as shown in Figs. 5 and 8, can be similarlymade. In this case,

' the Bakelite holding member 35 has the metal plate 3l at its peripheryand may be secured thereto by the pressed out member 3B or by cementing.f

The metal plate 20 is shown in Figs. 4 and 5 made oi' a circular metalband 20a, though the width is not material. InV a. rectangular razorhead, this metal band may extend from side to side and have the teeth onits parallel sides. Two bands molded into a Bakelite holding member maybe used. In Figs. 1 and 8 the metal plate 'is in the form of a disc.

The cutting edge of the top plate is shown in Fig. '7, as also in Figs.5, 8, and 12, by 45.

The skin contacting sides are shown by 26 of the bottom plate of Fig. 3,and the skin contacting side 46 of the top plate 35, are in a singleplane; when the top plate is placed upon the bottom plate. In the linebetween Fig. 4 and Fig, 5, the edge of the top plate is shown as inalignment with the periphery of the metal plate 2li of the bottom membershown in Fig. 4.

In Fig. 9 is shown a movable cutter 25a, of standard, hand-operatedsafety razor shape.

From the drawing it will be seen that in Figure 3 the metallic member 20has an exposed face, and in Figure 2 it is' seen that 4this face has twolateral sides, this face and these sides forming the cutting edges, asseen in Figure 2. Similarly, in Figure 6, there is an exposed face 31,and this has lateral sides which in Figure 7 show the cutting edges I5.At least .one side of the metallic teeth, and one side of the moldedteeth, are in a molded material.

plane, asseen from Figures 2 and 'L When thepartsshownlnll'igures4and5areplacedontop of each other, the metallicexposed faces of the teeth and the body portion of the metallic plateswill rub against each other, whereas. when the razor is applied to theface, the face will contact with the side 45 in Figure 6. 'I'he planewhich passes through this tapering surface of the member 31, also passesthrough the part 40 of Figure 6, and the part 26 of Figure 3; thus theapex 21, face 2i of Figure 3, and the tapering surface of the metallicplate 31, and the face 4I of Figure 6,

are all in one line. Save for the exposed faces of the thin metallicplates and their lateral sides which form therewith the cutting edges,and the very small tapering side of the member 31, the metallic platesare embedded in the molded material and enclosed thereby.A

From the foregoing, it will 'be seen that a very simple and inexpensivemethod of making blades has been described. Bakelite or the like has avery low cost, and only so much high grade cutting edge metal need beused as to satisfy the teeth forming portions which provide the cuttingedges.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable oi'variation and modification without departing from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails of construction set forth, but desire to avail myself of suchvariations, modification and adaptations as come within the scope of theappended claim.

I claim:

The combination of a pair of composite cutter members for razors, one ofsaid members consisting of a thin metallic plate having marginal teeth,

and a plastic material molded upon said plate and teeth, leaving oneface and two adjacent sides of the teeth of the metallic plate exposed,and the other member consisting of a thin metallic plate having marginalteeth and a plastic material molded upon said plate and teeth, leavingone face, two adjacent sides and a side opposite the iirst side andinclined to the face exposed, the thickness of the moldedmaterial ineach member being a, multiple of the thickness of the plate, the exposedsides of the plates facing each other, one side of the teeth of themolded material of each cutter member and the exposed inclined side ofthe metallic teeth being in a plane, forming a composite skin-engagingsurface, and tongues formed in each-metallic plate and embedded withinthe molded body portion, whereby. Y the cutting action is obtained bythe edges formed by the exposed faces and adjacent sides of the metallicteeth, said teeth and their metallic plates being substantially enclosedby the molded material save for the aforesaid exposed parts, and contactwith the face is made largely by the GEORGE R. BOTT.

